Marine propulsion mechanism.



APPLICATION FILED JAN. 31,. 1914.

Patented Mar. 16, 1915.

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APPLICATION FILED JAN` 3l, 1914.

115,131,862, Patented Mr. 16,1915.

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APPLICATION FILED JAN. 31, 1914.

Patented Mar. 16, 1915.

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INVENTOR @WY Pe nfl/111 s LUHS ATTORNEY H. J. PERKINS. MARINE PROPULSION MBGHANISM. APPLICATION FILED `TAN. 31,1914.

, 1,131,862. Patented Mar.h16,1915.

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bus ATTORNEY HARRY J. PERKINS, OF GRAND RAPIDS, MICHIGAN.

MARINE PROPULSION MECHANISM.

Specification of Letters Patent.

Patented Mar.. 16, 1315.

Application led January 31, 1914. Serial No. 815,620.

T0 all whom t may concern.'

Be it known that I, HARRY J. PERKINS, a citizen of the Unitedv States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Marine Propulsion Mechanisms, of which the following is a specification.

My present invention relates to marine propulsion mechanism, and its object is to provide mechanism of that character which shall be simple and economical in construction and easy and eliicient in operation. This and any other objects hereinafter appearing are, attained by, and the invention finds a preferable embodiment in, the struc-` ture hereinafter described and illustrated by the accompanying drawings, in which:

Figure 1 is a side elevation of said structure: Fig. 2 is a vertical central section of the same: Fig. 3 is a like view of the lower part thereof: Fig. 4 is a transverse section on line 4 4 of Fig. 3: Fig. 5 is a top plan view of the tiller and a transverse section of the rudder stock, crank shaft, etc: Fig. 6 is a fragmentary view of the same parts mostly in vertical central section: Fig. 7 is a transverse section of the rudder stock,

v crank shaft, etc., on line 7-7 of Fig. 3:

Fig. 8' is a transverse section on line 8--8 offFig. 6: Fig. 9 is a like section on line 9-9 of'Fig. 6: Fig. 10 is a side elevation of the supporting frame: Fig. 11 is a fragmentary side elevation of a. part of the same, showing a variant construction: Fig. 12 is a vertical central sectional view of the eX- haust silencer: Fig. 13 is a transverse section thereof on line 13-13 of Fig. 12: and Fig. 14is a sectional view on line 14-14 of Fig. 12.

My marine propulsion mechanism is adapted to be removably attached to a boat l (indicated in dotted lines in Figs. 1 and 2), as by the supporting frame 2 straddling the stern board 3 whereto it is clamped as by a suitable screw 4. The rest of the mechanism is adjustably carried by this supporting frame, so that it may be held in different positions vertically relative thereto, by its supporting bolt 5 adapted to be inserted into any one of a series of orifices 6 in said frame, or to be passed through a slot 7 (as particularly shown in Fig. 11); and also so that it may be held at the proper angular position relatively to the stern board, as by the arm 8 pivoted on said frame and having a clamping nut 9.

The internal combustion engine is of common type, having a cylinder 1 0, fuel tank 11, piston 12, fly wheel 13 withl cranking handle 14, engine shaft or crank shaft 15, etc.; bearings 16 for this shaft are carried withina supporting sleeve 17 borne by the engine frame 18; bevel. gears 19 drive the propeller shaft 20 carrying the propeller 21. Suitable pumping mechanism 22 operated by the cam 23 supplies cooling water through a flexible tube 24 to the water jacket chamber 2.5; the overflow water from'this chamber runs through a pipe 26 to the eX- haust silencer 27 where it meets the gases, etc., constituting the exhaust from the engine, conducted therefrom by the-exhaust pipe 28. This exhaust silencer has a chamber 29 containing a bell 30, the inner wall of the chamber and the external surface of the bell being provided with alternately disposed deflectors 31 so that the Water and exhaust willnin passing downwardly, be thorf oughly commingled, thus to minimize the noise of the exhausting of the engine, to which end the under-water discharge port 32 of the. silencer i also contributes. The rudder stock is a sleeve 33 surrounding and having its rotary bearing on the supporting sleeve 17 and carrying the rudder blade 34 extending both above and below the propeller shaft; a geared segment collar 35 is carried by the rudder stock being clamped thereto -as by a screw bolt 36. ivoted at 37 on the engine frame is the tiller 38 having a geared segment 39 in'termeshing with the segment 35 to turn the rudder.

Not confining myself to details of construction shown or described,'1 claim 1. In mechanism of the character described, a supporting frame having a plurality of orices arranged one above another, means for securing said frame to a boat, anv engine frame carrying an en 'ne and propeller and also a rudder, and a olt adapted to support the vengine'frame and to pass through any of said orifices to hold the engine frame in a desired position vertically relatively to the supporting frame, the rudder having a swinging horizontal movement relatively to the engineiframe.

2. In mechanism of the character described, an engine frame carrying an engine and propeller, a vertical rotatable shaft for driving the propeller by the engine", and a. rudder stock carrying a rudder blade and rotatable for steering on bearings surrounding said shaft. I

3. In mechanism of the character described, an engine frame carrying an engine and propeller, a vertical rotatable shaft for driving the propeller, a rudder stock rotatable for steering on bearings surrounding said shaft and having 'a rudder blade extending below the propellers axis.

4. In mechanism of the character described, an engine frame carryin an engine and propeller, a vertical rotatab e shaft for driving the propeller, arudder stock carrying a rudder bladeand rotatable for steering on bearings surrounding said shaft and having a segmental gear, and a pivoted tiller having a segmental gear, meshing with the rudder stocks said gear to rotate th same. v

In testimony whereof I have hereunto set my hand in'presence of two subscribing witnesses.

HARRY J. PERKINS.

Witnesses:

CYRUS E. PERKINS, ELBERT F. LEWIS. 

